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<p>In China, short-term emission controls have been implemented widely in the host and nearby cities of major events to reduce air pollution. However, insufficient analysis of their effectiveness has weakened the design of pollution controls. In this study, we analyzed the impact of short-term controls on nitrogen oxide emissions and quantified their main drivers in both the host and neighboring cities of 11 events held in east China from 2010 to 2023. We found that short-term controls might be more effective in neighboring cities than in host cities for some events, and that their benefits in terms of reduced emissions have weakened over time. Furthermore, the main sector of emission abatement for events has shifted from power to industry and transportation, reflecting the evolution of emission controls and the relative dominance of air-pollution budgets for different sectors. Our analysis highlights the enhanced targeting of short-term air pollution controls for Chinese cities, which also supports the long-term policy design.</p>

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Declining short-term emission control opportunity for major events in Chinese cities

  • 期刊论文

  • 发表日期：

    2025年4月28日

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  • Hanying Wang,
  • Qin He,
  • Hao Kong,
  • Kai Qin,
  • Bo Zheng,
  • Jintai Lin,
  • Yu Zhao

摘要

In China, short-term emission controls have been implemented widely in the host and nearby cities of major events to reduce air pollution. However, insufficient analysis of their effectiveness has weakened the design of pollution controls. In this study, we analyzed the impact of short-term controls on nitrogen oxide emissions and quantified their main drivers in both the host and neighboring cities of 11 events held in east China from 2010 to 2023. We found that short-term controls might be more effective in neighboring cities than in host cities for some events, and that their benefits in terms of reduced emissions have weakened over time. Furthermore, the main sector of emission abatement for events has shifted from power to industry and transportation, reflecting the evolution of emission controls and the relative dominance of air-pollution budgets for different sectors. Our analysis highlights the enhanced targeting of short-term air pollution controls for Chinese cities, which also supports the long-term policy design.